EP2100102B1 - Dispositif de mesure - Google Patents

Dispositif de mesure Download PDF

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Publication number
EP2100102B1
EP2100102B1 EP07856117.2A EP07856117A EP2100102B1 EP 2100102 B1 EP2100102 B1 EP 2100102B1 EP 07856117 A EP07856117 A EP 07856117A EP 2100102 B1 EP2100102 B1 EP 2100102B1
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EP
European Patent Office
Prior art keywords
conductor
measuring arrangement
housing
sensor
arrangement according
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EP07856117.2A
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German (de)
English (en)
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EP2100102A1 (fr
Inventor
Rainer Haevescher
Achim FÜRHOFF
Maik Hubert
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Lemfoerder Electronic GmbH
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Lemfoerder Electronic GmbH
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields

Definitions

  • the invention relates to a measuring arrangement comprising a magnetic-field-sensitive sensor comprising a body made of magnetic material having a continuous recess and a wall delimiting it and at least one electrical conductor extending between two ends and passing through the recess, a magnet movable relative to the body the magnetic field of which the permeability of the body can be varied as a function of the distance between the body and the magnet, and of an evaluation device which can be connected or connected to the conductor and by means of which the change in the permeability of the body can be detected. Furthermore, the invention relates to a magnetic field-sensitive sensor for such a measuring arrangement.
  • the EP1524504 discloses a position sensor comprising a waveguide, an electrical return conductor, a detector coil disposed on the waveguide in the detector region, and a position magnet movable along the waveguide, the central portion of the waveguides being located between the detector region and the free end of the waveguide remote therefrom is disposed within a hollow return conductor made of electrically conductive, non-magnetic material.
  • the DE 199 33 244 A1 discloses a potentiometer including at least one pair of magnetoresistive elements formed in pairs on a substrate in such a state that the elements are interconnected such that the orientations of the axes of magnetization of fixed magnetic layers of the elements are offset by 180 °.
  • a magnetic encoder is rotatably disposed opposite to the magnetoresistive elements on the substrate such that the center of rotation of the magnetic encoder is offset by an intermediate position of the paired magnetoresistive elements is running.
  • the magnetic encoder has at least two poles along its direction of rotation.
  • the DE2446132 discloses a sensor device having a sensor consisting of an annularly closed, magnetically saturable core, a sense winding wound around an end of the core, and a high frequency AC generator.
  • a permanent magnet is disposed in the vicinity of the core to provide magnetic flux over the flow paths passing through the core.
  • the query wrap has two ends.
  • a coil arrangement is known as a magnetic sensor consisting of at least one toroidal coil having a closed, provided with a coil core of ferromagnetic material and a movable past in a relative movement magnet.
  • the magnetic field to be detected causes a change in the core permeability and thus the coil inductance, which can be detected by an evaluation device.
  • a disadvantage of this coil arrangement is the relatively high production costs for winding the coil.
  • the invention has the object, the aforementioned measuring arrangement or the aforementioned magnetic field-sensitive sensor in such a way that the manufacturing cost is reduced.
  • the measuring arrangement comprises a magnetic-field-sensitive sensor comprising a body made of magnetic material having a continuous recess and a wall delimiting it and at least one electrical conductor extending between two ends and passing through the recess, a magnet movable relative to the body, of its magnetic field the permeability of the body is variable as a function of the distance between the body and the magnet, and an evaluation device connectable or connected to the conductor, by means of which the change in the permeability of the body can be detected, wherein the conductor does not wrap around the wall.
  • the conductor extends between its two ends.
  • the electrical conductor can simply be inserted through the recess without winding the conductor around the wall. This simplifies manufacturing costs for the magnetic-field-sensitive sensor and thus for the measuring arrangement to a not inconsiderable extent.
  • the magnetic-field-sensitive sensor provides evaluable signals and behaves in electrical engineering terms as, or almost like a coil, which is wound with a turn on the wall.
  • the wall preferably forms a ring enclosing the recess, which is in particular closed.
  • a ring or toroidal core is formed by the body of magnetic material.
  • the cross section of the ring may have any shape. Preferably, however, the cross section is annular.
  • the magnetic material is preferably a high permeability material whose permeability varies as the distance between the magnet and the body varies.
  • the magnetic material assumes its saturation magnetization when falling below a certain distance (switching distance) between the magnet and the body, so that the relative permeability drops to the value 1 or approximately to the value 1.
  • This comparatively large change in the permeability causes a clearly measurable change in the inductance of the electrical conductor, which can be detected by means of the evaluation device.
  • the magnetic material in particular saturates magnetically or assumes the saturation magnetization.
  • the material used is preferably a soft magnetic material.
  • the relative permeability or initial permeability of the magnetic material is in a range of about 4000 to 150000 or above. These high permeabilities are e.g. achievable with a nanocrystalline material, in particular with a nanocrystalline metal.
  • the nanocrystalline material may e.g. nanocrystalline iron or an iron-based nanocrystalline alloy. Alternatively, a ferrite or other ferromagnetic material may be used as the magnetic material.
  • the conductor is particularly made of metal, e.g. Copper, formed.
  • the body can be arranged between two mutually opposite walls, through which the conductor extends and between which the conductor preferably runs exclusively straight.
  • the conductor is firmly connected to one of the walls, so that for mounting the sensor, the conductor is first inserted through the recess of the body and then through the other wall, which has a suitable through hole for it.
  • the body is arranged in particular in a housing which may comprise both or one of the walls.
  • the housing and / or the walls are preferably made of plastic and can be made as an injection molded part.
  • One of the walls forms, in particular, the bottom of a cup-shaped housing which can be closed or closed by a lid which is formed by the other wall.
  • the at least one conductor can be held by or embedded in a holder, which is preferably fixedly connected to the lid or formed in one piece.
  • the bottom may have a through opening into which the bracket engages.
  • the arranged in the housing body of magnetic material is penetrated by the holder, so that the overall result is a particularly compact and easy-to-install sensor.
  • the housing may also have an annular recess into which the body of magnetic material is inserted or inserted or is.
  • the recess surrounds a housing inner part, through which the at least one conductor is passed.
  • a housing outer part surrounds or surrounds the body, which is thus largely protected against contamination and external force.
  • the housing inner part is in particular integrally formed or fixedly connected to the housing outer part, so that the annular recess preferably forms an annular blind hole.
  • the term blind hole is to be understood in particular that the recess is bounded on one side by a bottom.
  • the housing inner part is in particular cylindrical.
  • the housing outer part may have an outer surface with at least one flat surface area, to which e.g. a sucker can attack an automatic pick and place machine.
  • This housing is preferably made of plastic and can be made as a plastic injection molded part.
  • the conductor may be angled outside the housing, so that the body can be placed on the circuit board for contacting the two ends of the conductor with contact surfaces of a printed circuit board.
  • the electrical conductor is generally straight.
  • a recess can be made in the latter into which the body is inserted or suspended.
  • the ends of the conductor are located at the edges of the recess and can there be brought into contact with arranged on the surface of the printed circuit board contact surfaces. The ends of the conductor thus form contacts for electrically contacting the conductor.
  • the conductor may have at its end portions or throughout a square cross-section, so that the soldering of the end portions of the conductor is facilitated to the contact surfaces. Also, the mounting on the PCB is facilitated because the sensor can not roll. Furthermore, a total of four surfaces are available for contacting.
  • the sensor may be useful to provide the sensor redundant in order to continue working with the redundant sensor in the event of failure of the sensor.
  • the sensor is provided as a whole several times, which, however, the space requirements and production costs can rise.
  • the sensor it is possible for the sensor to have at least one additional electrical conductor extending between two other ends and guided through the recess, which in particular does not wrap around the wall.
  • the conductors are preferably designed coincidentally and can run parallel to one another.
  • the other ends of the additional conductor in particular form contacts for electrically contacting the additional conductor.
  • a redundant magnetic field sensitive sensor using common components or a common component (magnetic material body). Since the magnetic material body can usually be regarded as fail-safe, the sharing of components also has no safety drawbacks over the multiple placement of completely self-contained sensors.
  • the passage of at least two separate conductors through the recess additionally has the advantage that the conductors can excite each other, so that not only failsafe but in addition also a mutual functionality test or diagnosis is possible.
  • the magnetic material for the body is provided in particular in the form of a foil or a band, so that the foil or the band can be wound up to form the body of magnetic material.
  • the wall is thus preferably formed from a wound band of magnetic material and in particular has a ring shape.
  • the band shape of the magnetic material has the advantage that it is relatively small Band thicknesses are feasible. This causes a relatively high electrical resistance of the tape, so that eddy current losses can be kept low. Furthermore, it is possible to give the body by the winding a certain elasticity.
  • the change of the permeability of the magnetic material may e.g. be determined that at least one electrical pulse is delivered to the conductor.
  • the impulse response from the conductor is measured and evaluated, with different permeabilities leading to different impulse responses.
  • the outputting of the electrical pulse as well as the evaluation of the impulse response takes place in particular by means of the evaluation device, which may have a microprocessor or microcontroller for this purpose.
  • the evaluation is preferably carried out digitally, wherein the impulse response or the signal coming from the conductor is supplied to an analog-to-digital converter, which is integrated in particular in the microcontroller. It is possible to supply the impulse response or the signal coming from the conductor without amplification to the analog-to-digital converter, so that preferably no amplifier is connected between the conductor and the analog-to-digital converter.
  • each of the sensors can be connected to a separate evaluation device.
  • the sensors are connected to the inputs of at least one multiplexer whose output is e.g. is connected to the evaluation device.
  • the multiplexer can also be part of the evaluation device.
  • a plurality of sensors can be connected or interrogated with the same evaluation device.
  • Spatially successively arranged sensors may have separate bodies of magnetic material.
  • a single body of magnetic material for the sensors whose conductors are arranged spatially one behind the other and passed through the wall of the body.
  • This single body of magnetic material is then divided into a plurality of magnetic body logical bodies, each associated with one of the sensors.
  • the magnetic body of magnetic material but also magnetically decoupled from each other, so that the Magnetic field of the magnet is not several logical body simultaneously put into magnetic saturation.
  • the measuring arrangement according to the invention is used in particular for detecting the position of a first component relative to a second component.
  • the magnet can be provided on the first component and the at least one magnetic field-sensitive sensor on the second component.
  • a plurality of magnetic field-sensitive sensors which are in particular of a similar construction, are provided on the second component, on which the first component with the magnet can be moved past.
  • the measuring arrangement is used for the selector lever device of a motor vehicle, so that the first component, e.g. from a selector lever and the second component e.g. is formed by a body-mounted bracket relative to which the selector lever is pivotable or adjustable in different switching positions.
  • the sensors are assigned to the different shift positions, so that the evaluation device can control the vehicle transmission in dependence on the detected shift position.
  • the invention furthermore relates to a magnetic-field-sensitive sensor having a body made of magnetic material having a through recess and a wall delimiting it and at least one electrical conductor extending between two ends and passing through the recess, the permeability of the body being variable in dependence on an external magnetic field, and wherein the conductor does not wrap around the wall.
  • This magnetic-field-sensitive sensor can be developed in accordance with all the aforementioned embodiments and is used in particular for the measuring arrangement according to the invention.
  • the external magnetic field is preferably generated by the previously described magnet, which is in particular a permanent magnet.
  • this magnet can also be an electromagnet.
  • the magnetic material can assume the state of magnetic saturation due to the external magnetic field.
  • the sensor is preferably used for detecting the position of an actuating element, which is designed here as a magnet. It should be able to be recognized in particular whether the Distance between the magnet and the body of magnetic material has fallen below the switching distance or not. When approaching, the magnet preferably saturates the toroid, ie the permeability drops significantly. This effect can be evaluated by measuring different electrical quantities. Examples of such an evaluation are: evaluating the impulse response to a square wave signal, determining the inductance and / or measuring the phase response or the amplitude of an alternating signal.
  • An advantage of the measuring arrangement according to the invention is that the sensor can be made very cost effective and automated by its design and / or the sensor in its redundant design can serve two independent Ausirenike, so instead of two sensors so far only one sensor is needed to redundancy to achieve. Furthermore, a diagnostic capability is possible not only in the actuated state but also in the unactuated state, since both electrical conductors can excite themselves or each other.
  • the sensor can be considered in the electrical sense as a coil having a high permeability toroidal core. With only one turn the sufficient inductance for the electrical sensor function can be achieved, wherein a turn in the toroidal core can be realized by the simple passage of an electrical conductor through the toroidal core. An additional passing through further electrical conductors allows a redundant signal evaluation.
  • This optimally simplified design offers numerous advantages in the production and distribution of the sensor, of which a few are listed below: Simplified automated manufacturing process, low manufacturing tolerances due to design increase sensory measurement accuracy, elimination of the winding process required for coils, cost savings compared to previous sensor methods, realization the redundancy in a component, increased reliability / availability by reducing the component complexity, diagnostic capability, lower cost of the electronic circuit and less effort to expand to other sensors in a system over other inductive solutions, controllable by material properties temperature compensation, since the thermal Characteristics of the magnet and the saturation induction of the Sensor ring core can cancel, high interference margins on magnetic interference fields by ring core with high saturation induction.
  • Fig. 1 is a schematic view of a measuring arrangement 1 according to a first embodiment of the invention can be seen, wherein a magnetic field sensitive sensor 2 is connected via electrical lines 3 to an evaluation device 4.
  • the magnetic field-sensitive sensor 2 has two electrical conductors 5 and 6, with which the electrical leads 3 are connected, wherein the electrical conductors 5 and 6 extend through a housing 7 of the sensor 2 therethrough.
  • the housing 7 is cup-shaped and closed by a lid 8.
  • the outer surface 9 of the housing 7 is at least partially planar, so that the sensor 2 can be held with the sucker of an automatic placement device.
  • a magnet 22 is shown whose magnetic field can interact with the magnetic field sensitive sensor 2.
  • the sensor 2 is in Fig. 1 shown in plan view, whereas the sensor 2 in Fig. 2 in a side view and in Fig. 3 is shown in a rear view.
  • Fig. 4 is a longitudinal section through the sensor 2 can be seen, wherein in the housing 7, an annular body 10 is disposed of magnetic material, through which extend the two conductors 5 and 6, which are here completely straight and parallel to each other.
  • the conductors 5 and 6 are held at a distance from each other by a holder 11, which is preferably fixedly connected to the cover 8.
  • a continuous recess 24 is provided, in which the holder 11 engages, wherein the conductors 5 and 6 extend through the recess 24 therethrough.
  • the sensor 2 can be hung in particular in a recess of a printed circuit board, which in connection with Fig. 10 is explained.
  • the cover 8 and the holder 11 may be two different parts, for example, glued together or otherwise connected firmly together.
  • the holder 11 is integrally formed with the lid 8, which is made Fig. 12 is apparent.
  • the holder 11 is made in particular of plastic.
  • Fig. 5 shows a cross section through the sensor 2, wherein it can be seen that the conductors 5 and 6 are embedded in the holder 11, which rests in a through recess 12 of the body 10.
  • the holder 11 is provided with a fixation, which in particular has sprung or resilient tabs 13, which bear against the inside of the recess 12 bounding wall 26 of the body 10.
  • the body 10 is preferably made of a band 14 which is wound up to the body 10, which is schematically illustrated in FIG Fig. 6 is shown.
  • a magnetic-field-sensitive sensor 2 according to a second embodiment of the invention can be seen, wherein identical or similar features to the first embodiment are denoted by the same reference numerals as in the first embodiment.
  • the electrical conductors 5 and 6 are angled outside the housing and formed as feet that can be brought into contact with contact surfaces of a printed circuit board. Within the housing 7, the conductors 5 and 6 extend straight and through the body 10 made of magnetic material. Out Fig. 8 the body 10 can be seen through an opening 27 provided in the underside of the housing 7, which alternatively can also be closed or not present.
  • FIG. 9 shows a front view of the sensor 2, wherein the annular formation of the body 10 is shown, which is preferably inserted or inserted into an annular recess 30 of the housing 7.
  • a fixation of the body 10 in the housing 7 can be done for example by adhesive or by a mechanical detent.
  • the body 10 may be formed identically to the first embodiment.
  • the conductors 5 and 6 are angled outside the housing, so that the sensor is particularly suitable as a surface mountable component (SMD).
  • the electrical conductors 5 and 6 may also be formed as a whole straight, which in Fig. 13 is shown. In this case, the sensor 2 can be hung in particular in a recess of a printed circuit board, which in connection with Fig. 10 is explained.
  • Several sensors 2 can be seen, which are mounted on a printed circuit board 15. Corresponding to the number of sensors 2 to be fastened, recesses 16 are milled into the printed circuit board 15, into which the sensors 2 can be suspended. The sensors 2 are held by their electrical conductors 5 and 6, which rest on the circuit board 15 in the region of the edges of the recesses 16. Seen in the longitudinal direction 28 of the sensors 2, the extent of the recesses 16 is thus greater than the length of the housing 7 but smaller than the length of the conductors 5 and 6. For this type of mounting sensors 2 of both embodiments can be used. However, preference is given to sensors 2, the conductors 5, 6 are formed straight overall. The introduction or Mounting the sensors 2 in the recesses 16 has the particular advantage that the magnet 22 can be brought relatively close to the individual sensors 2, without the circuit board 15 is interposed.
  • Fig. 11 is a schematic diagram of six sensors 2 can be seen, the conductors 5 and 6 of each sensor 2 are shown as inductance 17 and 25 respectively.
  • the evaluation device 4 has two signal transmitters 18 and 19, the conductors 6 being connected at one end to the signal transmitter 18 and the conductors 5 at one end to the signal generator 19. Furthermore, the conductors 5 and 6 are connected at the other end to two multiplexers 20 and 21 whose output signals are further processed for evaluation purposes and / or diagnostic purposes. This further processing takes place, for example, with a microprocessor or microcontroller 29.
  • Fig. 14 shows a sectional view of the second embodiment, wherein the housing 7 has the annular recess 30, in which the body 10 is inserted and which is in particular formed as a blind hole.
  • the housing 7 has an outer housing part 31 and a housing inner part 11, through which the conductors 5 and 6 extend, so that the housing inner part 11 simultaneously forms a support for the conductors 5 and 6.
  • the housing inner part 11 is integrally formed with the housing outer part 31, wherein the housing 7 is made entirely on plastic.
  • the housing 7 of the variant according to Fig. 13 is structured accordingly.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Claims (11)

  1. Arrangement de mesure comprenant
    - un capteur (2) sensible aux champs magnétiques, lequel comporte un corps (10) en matériau magnétique qui possède une cavité (12) continue et une paroi (26), la paroi (26) délimitant cette cavité (12), le capteur comportant en outre au moins un conducteur électrique (5) qui s'étend entre ses deux extrémités et qui passe à travers la cavité (12),
    la paroi (26) formant un anneau qui entoure la cavité (12), de sorte que le corps (10) est configuré en tant que noyau toroïdal d'une bobine, la bobine ne possédant qu'un seul enroulement, l'enroulement étant réalisé par un simple passage du conducteur (5) à travers la cavité (12),
    - un aimant (22) qui peut être déplacé par rapport au corps (10), dont le champ magnétique permet de faire varier la perméabilité du corps (10) en fonction de l'écart entre le corps (10) et l'aimant (22), et
    - un dispositif d'interprétation (4) qui peut être relié ou qui est relié au conducteur (5), au moyen duquel la perméabilité du corps (10) peut être détectée.
  2. Arrangement de mesure selon la revendication 1, le corps (10) étant disposé entre deux parois (8, 23) mutuellement opposées d'un boîtier (7), à travers lesquelles s'étend le conducteur (5) et entre lesquelles le conducteur (5) chemine exclusivement en ligne droite.
  3. Arrangement de mesure selon l'une des revendications précédentes, le conducteur (5) étant globalement de configuration droite.
  4. Arrangement de mesure selon l'une des revendications précédentes, le conducteur (5) possédant une section transversale quadrangulaire.
  5. Arrangement de mesure selon l'une des revendications précédentes, le capteur (2) possédant au moins un conducteur (6) électrique supplémentaire qui s'étend entre deux autres extrémités et qui passe à travers la cavité (12).
  6. Arrangement de mesure selon la revendication 5, les conducteurs (5, 6) étant de configuration concordante et cheminant parallèlement l'un à l'autre.
  7. Arrangement de mesure selon l'une des revendications précédentes, le corps (10) se composant d'une bande enroulée (14).
  8. Arrangement de mesure selon l'une des revendications précédentes, le dispositif d'interprétation (4) pouvant délivrer au moins une impulsion électrique au capteur (2) et la réponse à l'impulsion pouvant être interprétée au moyen du dispositif d'interprétation (4).
  9. Arrangement de mesure selon l'une des revendications précédentes, au moins un deuxième capteur (2) sensible aux champs magnétiques, les capteurs (2) étant de configuration concordante et étant reliés à au moins un multiplexeur du dispositif d'interprétation.
  10. Arrangement de mesure selon l'une des revendications précédentes, le ou les conducteurs (5, 6) étant enrobés dans un support (11), lequel est relié à demeure à un couvercle (8) ou formé d'un seul tenant avec celui-ci, le support (11) venant en prise dans une ouverture (24) d'un fond (23) d'un boîtier (7) en forme de pot, lequel est fermé au moyen du couvercle, le corps (10) en matériau magnétique étant disposé dans le boîtier (7) et étant traversé par le support (11).
  11. Arrangement de mesure selon l'une des revendications 2 à 10, le boîtier (7) possédant une cavité (30) de forme annulaire et délimitée d'un côté par un fond, dans laquelle est inséré le corps (10) en matériau magnétique, la cavité (30) de forme annulaire encerclant une partie intérieure de boîtier (11) à travers laquelle passent le ou les conducteurs (5, 6), et le corps étant encerclé par une partie extérieure de boîtier (31) qui est reliée à demeure à la partie intérieure de boîtier (11) ou formée d'un seul tenant avec celle-ci.
EP07856117.2A 2007-01-09 2007-12-17 Dispositif de mesure Active EP2100102B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007002085A DE102007002085B3 (de) 2007-01-09 2007-01-09 Messanordnung
PCT/DE2007/002268 WO2008083653A1 (fr) 2007-01-09 2007-12-17 Dispositif de mesure

Publications (2)

Publication Number Publication Date
EP2100102A1 EP2100102A1 (fr) 2009-09-16
EP2100102B1 true EP2100102B1 (fr) 2017-01-25

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US (1) US8552723B2 (fr)
EP (1) EP2100102B1 (fr)
JP (1) JP2010515888A (fr)
CN (1) CN101606041B (fr)
DE (1) DE102007002085B3 (fr)
WO (1) WO2008083653A1 (fr)

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DE102008063528A1 (de) * 2008-12-18 2010-06-24 Micro-Epsilon Messtechnik Gmbh & Co. Kg Sensoranordnung und Verfahren zur Bestimmung der Position und/oder Positionsänderung eines Messobjekts
TWI446896B (zh) * 2011-12-23 2014-08-01 Ind Tech Res Inst 肌能參數感測器
DE102015210845A1 (de) * 2015-06-12 2016-12-15 Continental Teves Ag & Co. Ohg Sensoreinrichtung und Verfahren zur Überwachung eines Füllstands in einem Flüssigkeitsbehälter
DE102015221923B4 (de) * 2015-11-09 2019-06-13 Continental Automotive Gmbh Elektrische Maschine mit Leiterplattenanordnung für die Wicklungsverschaltung und zugehöriges Herstellungsverfahren
EP3452842B1 (fr) * 2016-06-29 2021-12-08 TAE Technologies, Inc. Boucle de flux et fil à point b combiné isolé minéral
DE102019103723A1 (de) * 2019-02-14 2020-08-20 TE Connectivity Sensors Germany GmbH Sensoreinrichtung und System zur Erfassung eines magnetischen Sicherheitsmerkmals eines Dokuments

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DE10249919A1 (de) * 2002-10-26 2004-05-13 Festo Ag & Co. Spulenanordnung als Magnetfeldsensor

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DE2446132A1 (de) * 1973-10-05 1975-04-10 Illinois Tool Works Winkelgeschwindigkeitssensor
DE10249919A1 (de) * 2002-10-26 2004-05-13 Festo Ag & Co. Spulenanordnung als Magnetfeldsensor

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Publication number Publication date
EP2100102A1 (fr) 2009-09-16
CN101606041A (zh) 2009-12-16
WO2008083653A1 (fr) 2008-07-17
CN101606041B (zh) 2012-07-04
JP2010515888A (ja) 2010-05-13
US8552723B2 (en) 2013-10-08
US20100039108A1 (en) 2010-02-18
DE102007002085B3 (de) 2008-04-17

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